header{
    height: 50px;
    background: #fff;
    border-bottom: 1px solid #ececec;
}
.ibm-home{
    margin-left: 20px;
    float: left;
    overflow: hidden;
}
.ibm-home>a{
    width: 60px;
    height: 50px;
    display: block;
    float: left;
    line-height: 50px;
    text-align: center;
    color: #000;
    font-size: 23px;
}
.top_nav{
    float: left;
    margin-left: 20px;
}
.top_nav>li{
    line-height: 50px;
    text-align: center;
    height: 50px;
    float: left;
    margin-left: 25px;
}
.top_nav>li>a{
    color: #323232;
}
.top_nav>li>div>a{
    color: #323232;
}
.top_nav>li>div>a>i{
    margin-left: 5px;
}
.top_nav>li>div{
    position: relative;
}
.top_nav>li>div .hidden_content{
    position: absolute;
    bottom: 0;
    left: 0;
    
}
.top_nav>li:nth-child(1){
    margin: 0;
}
.IBMsecarh_user{
    float: right;
    height: 50px;
    padding-right: 20px;
}
.IBMsecarh_user .secarh{
    height: 50px;
    float: left;
    border-left: 1px solid #ececec;
}
.IBMsecarh_user .secarh>input{
    width: 177px;
    height: 50px;
    text-indent: 10px;
    color: #757575;
    line-height: 50px;
    border: none;
    outline: none;
    display: block;
    float: left;
}
.IBMsecarh_user .secarh>i{
    width: 41px;
    height: 50px;
    display: block;
    float: left;
    color: #323232;
    font-size: 20px;
    line-height: 50px;
    text-align: center;
    border-right: 1px solid #ececec;
}
.IBMsecarh_user .user{
    height: 50px;
    float: left;
}
.IBMsecarh_user .user>a{
    width: 20px;
    height: 50px;
    display: block;
    float: left;
    margin-left: 25px;
    line-height: 50px;
    text-align: center;
    color: #323232;
    font-size: 20px;
}
.IBM_fluid{
    padding: 90px 0 120px;
    position: relative;
}
.IBM_fluid .on{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
}
.IBM_fluid .no{
    display: none;
}
.IBM_fluid .IBM_title{
    width: 1460px;
    margin: 0 auto;
}
.IBM_fluid .IBM_title>h1{
    font-size: 40px;
    color: #fff;
    font-weight: 400;
    display: inline-block;
}
.IBM_fluid .IBM_title>p{
    margin-top: 50px;
    color: #fff;
}
.IBM_fluid .IBM_title>p>a{
    color: #fff;
}
.IBM_fluid .IBM_title>p>a>i{
    font-size: 25px;
    margin-left: 5px;
}
.IBM_content_title{
    max-width: 1460px;
    margin: 0 auto;
    padding: 60px 0 20px;
}
.IBM_content_title>h2{
    padding: 0 0 15px;
    font-size: 30px;
    color: #323232;
    font-weight: 400;
    text-indent: 10px;
}
.IBM_content_center{
    max-width: 1460px;
    margin: 0 auto;
    padding: 0 10px 60px;
    overflow: hidden;
}
.IBM_content_center .IBM_content_list{
    width: 24%;
    padding: 0 0.5%;
    float: left;
    position: relative;
}
.IBM_content_center .IBM_content_list>p{
    padding-bottom: 20px;
    color: #5a5a5a;
}
.IBM_content_center .IBM_content_list>img{
    width: 100%;
    padding-bottom: 20px;
}
.IBM_content_center .IBM_content_list>span{
    padding-bottom: 35px;
    display: block;
}
.IBM_content_center .IBM_content_list>a{
    color: #3c89ff;
}
.IBM_services{
    padding: 60px 0;
    background: #F9F9F9;
}
.IBM_services>h2{
    width: 1460px;
    margin: 0 auto;
    padding-bottom: 55px;
    color: #323232;
    font-size: 30px;
    font-weight: 400;
    text-indent: 15px;
}
.IBM_services .IBM_services_search{
    width: 1460px;
    margin: 0 auto;
    padding-bottom: 65px;
    overflow: hidden;
}
.IBM_services .IBM_services_search .search_input{
    width: 698px;
    height: 38px;
    float: left;
    margin-left: 15px;
    border: 1px solid #959f9f;
    background: #fff;
    position: relative;
}
.IBM_services .IBM_services_search .search_input>input{
    width: 698px;
    height: 38px;
    border: none;
    outline: none;
    color: #6D7777;
    text-indent: 15px;
    position: absolute;
    top: 0;
    left: 0;
}
.IBM_services .IBM_services_search .search_input>i{
    position: absolute;
    right: 10px;
    top: 8px;
    font-size: 20px;
    color: #3B6CAD;
}
.IBM_services .IBM_services_search>a{
    display: block;
    float: left;
    height: 40px;
    line-height: 40px;
    padding: 0 20px;
    color: #3C89FF;
}
.IBM_services .IBM_services_search>a>i{
    font-size: 20px;
    margin-left: 5px;
}
.IBM_services .IBM_list_services{
    margin: 0 auto;
    max-width: 1460px;
    padding: 0 10px;
    overflow: hidden;
}
.IBM_services .IBM_list_services .IBM_list_s_left{
    width: 75%;
    padding: 0 10px;
    float: left;
}
.IBM_services .IBM_list_services .IBM_list_s_left>dl{
    overflow: hidden;
    padding: 0 10px 40px;
}
.IBM_services .IBM_list_services .IBM_list_s_left>dl>dt{
    font-weight: 600;
    color: #323232;
    padding-bottom: 15px;
}
.IBM_services .IBM_list_services .IBM_list_s_left>dl>dd{
    width: 33.333%;
    padding-bottom: 15px;
    float: left;
}
.IBM_services .IBM_list_services .IBM_list_s_left>dl>dd>a{
    color: #3c89ff;
}
.IBM_services .IBM_list_services .IBM_list_s_left>dl>dd>a>i{
    font-size: 20px;
}
.IBM_services .IBM_list_services .IBM_list_s_right{
    padding: 0 10px;
    float: left;
    width: 20%;
}
.IBM_services .IBM_list_services .IBM_list_s_right>p{
    color: #5a5a5a;
    padding-bottom: 15px;
}
.IBM_services .IBM_list_services .IBM_list_s_right .note_1_sR{
    color: #323232;
}
.IBM_services .IBM_list_services .IBM_list_s_right>img{
    width: 100%;
    display: block;
    padding-bottom: 15px;
}
.IBM_services .IBM_list_services .IBM_list_s_right>a{
    color: #3C89FF;
    padding-bottom: 15px;
}
.IBM_services .IBM_list_services .IBM_list_s_right>a>i{
    font-size: 20px;
}
.IBM_services .IBM_list_services .IBM_list_s_right_2{
    display: none;
}
.IBM_services .IBM_list_services .IBM_list_s_right_2>img{
    width: 50%;
    float: left;
}
.IBM_services .IBM_list_services .IBM_list_s_right_2>p{
    width: 50%;
    float: left;
}
.IBM_services .IBM_list_services .IBM_list_s_right_2>a{
    width: 50%;
    float: left;
    display: block;
}
.explore-trials{
    background: #F4F4F4;
}
.explore-trials .explore-trials_title{
    margin: 0 auto;
    max-width: 1460px;
    padding: 60px 10px 40px;
}
.explore-trials .explore-trials_title>h2{
    padding: 0 10px 20px;
    font-size: 30px;
    font-weight: 400;
    text-indent: 15px;
}
.explore-trials .explore-trials_title>a{
    display: block;
    padding: 0 10px 15px;
    color: #3C89FF;
    text-indent: 15px;
}
.explore-trials .explore-trials_title>a>i{
    font-size: 20px;
}
.explore-trials .IBM_content_center{
    max-width: 1460px;
    margin: 0 auto;
    padding: 0 10px 60px;
    overflow: hidden;
}
.explore-trials .IBM_content_center .IBM_content_list{
    width: 24%;
    height: 437.1px;
    padding: 0 0.5%;
    float: left;
    position: relative;
}
.explore-trials .IBM_content_center .IBM_content_list>p{
    padding-bottom: 20px;
    color: #5a5a5a;
    text-indent: 15px;
}
.explore-trials .IBM_content_center .IBM_content_list>img{
    width: 100%;
    padding-bottom: 20px;
}
.explore-trials .IBM_content_center .IBM_content_list>span{
    padding-bottom: 35px;
    display: block;
}
.explore-trials .IBM_content_center .IBM_content_list>a{
    color: #3c89ff;
    position: absolute;
    bottom: 0;
}
.join-ibm{
    background: #fff;
}
.join-ibm .join_IBM_M{
    margin: 0 auto;
    max-width: 1460px;
    padding: 60px 10px 60px;
    overflow: hidden;
}
.join-ibm .join_IBM_M>h4{
    padding: 0 10px;
    float: left;
    width: 33.333%;
    font-size: 20px;
    color: #323232;
}
.join-ibm .join_IBM_M>a{
    padding: 0 10px;
    float: left;
    display: block;
    width: 40%;
    font-size: 20px;
    color: #3C89FF;
}
.join-ibm .join_IBM_M>a>i{
    font-size: 20px;
}
footer{
    background: #F4F4F4;
}
.region-footer{
    margin: 0 auto;
    max-width: 1460px;
    padding: 0 10px 10px;
    overflow: hidden;
}
.region-footer>dl{
    width: 22%;
    padding: 40px 10px 25px;
    float: left;
}
.region-footer>dl>dt{
    font-weight: 600;
    color: #464646;
    padding-bottom: 15px;
}
.region-footer>dl>dd{
    padding-top: 7px;
}
.region-footer>dl>dd:nth-child(2){
    padding-top: 0;
}
.region-footer>dl>dd>a{
    color: #5a5a5a;
}
.ibm-footer-locale{
    margin: 0 auto;
    max-width: 1460px;
    padding: 0 10px 30px;
    overflow: hidden;
}
.ibm-footer-locale .ibm-footer-locale-selector{
    width: 25%;
    padding: 0 10px;
    float: right;
}
.ibm-footer-locale .ibm-footer-locale-selector>h2{
    font-weight: 600;
    color: #464646;
    padding-bottom: 15px;
}
.ibm-footer-locale .ibm-footer-locale-selector>select{
    width: 100%;
    height: 40px;
    border: 1px solid #959f9f;

}
.IBM_bottom_note{
    margin: 0 auto;
    max-width: 1460px;
    padding: 0 10px;
    
}
.IBM_bottom_note>div{
    padding: 11px 0;
    border-top: 1px solid #aeaeae;
}
.IBM_bottom_note>div>a{
    padding: 5px 20px 5px 0;
    color: #5a5a5a;
}